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Environmental Law and Policy

This guide is designed to help you locate resources for topics related to U.S. Environmental Law & Policy

APA 7th Edition

Locating & Using DOI information


Locating & Using DOI Information

What is a DOI?

  • A DOI (Digital Object Identifier) is a stable (permanent) URL that is linked to the specific document and cannot be changed.

Why do I need one?

  • Most citation formats now require DOI information.

Why are DOIs necessary?

  • Many online resources appear on multiple websites and databases. A DOI is linked permanently to a specific document and cannot be changed.

NOTE: You may not always see the DOI information for a resource in its reference information, but you can look it up using the Crossref information base

Sources: Crossref, Scribbr, The DOI Foundation